Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SMAR
1651
PUT
DELISTED
Smartsheet Inc.
SMAR
| $3.7M | ﹤0.01% |
84,000
+22,800
| +37% | +$909K |
|
1652
CALL
Liberty Global Class C
LBTYK
$3.27B
| $3.7M | ﹤0.01% |
212,300
+41,300
| +24% | +$719K |
|
1653
PUT
Immatics
IMTX
$1.24B
| $3.7M | ﹤0.01% |
318,400
+171,100
| +116% | +$1.93M |
|
1654
CALL
Rocket Companies
RKT
$36.9B
| $3.69M | ﹤0.01% |
269,300
+4,700
| +2% | +$63.5K |
|
|
BBBY
1655
CALL
Bed Bath & Beyond
BBBY
$473M
| $3.68M | ﹤0.01% |
309,870
+77,550
| +33% | +$1.38M |
|
1656
PUT
Commercial Metals
CMC
$7.63B
| $3.68M | ﹤0.01% |
67,000
+43,900
| +190% | +$2.42M |
|
1657
CALL
Guidewire Software
GWRE
$11.5B
| $3.68M | ﹤0.01% |
26,700
+10,400
| +64% | +$1.25M |
|
1658
PUT
Thor Industries
THO
$3.99B
| $3.68M | ﹤0.01% |
39,400
-16,000
| -29% | -$1.6M |
|
1659
CALL
Groupon
GRPN
$980M
| $3.68M | ﹤0.01% |
240,400
+75,300
| +46% | +$1.01M |
|
1660
Vodafone
VOD
$34.9B
| $3.68M | ﹤0.01% |
414,540
-279,940
| -40% | -$2.49M |
|
1661
CALL
Campbell Soup
CPB
$6.51B
| $3.67M | ﹤0.01% |
81,300
-15,000
| -16% | -$669K |
|
1662
Diamondback Energy
FANG
$57.6B
| $3.66M | ﹤0.01% |
+18,274
| New | +$3.63M |
|
1663
CALL
Hormel Foods
HRL
$13.9B
| $3.65M | ﹤0.01% |
119,700
-169,200
| -59% | -$5.69M |
|
1664
CALL
Manulife Financial
MFC
$72.6B
| $3.64M | ﹤0.01% |
136,700
-19,200
| -12% | -$480K |
|
1665
PUT
ACM Research
ACMR
$5.83B
| $3.62M | ﹤0.01% |
157,100
+89,500
| +132% | +$2.26M |
|
1666
CALL
DigitalBridge
DBRG
$2.94B
| $3.62M | ﹤0.01% |
264,400
-198,300
| -43% | -$2.99M |
|
1667
Enterprise Products Partners
EPD
$83.8B
| $3.62M | ﹤0.01% |
+124,952
| New | +$3.58M |
|
1668
CALL
Telus
TU
$16B
| $3.62M | ﹤0.01% |
239,100
+237,100
| +11,855% | +$3.82M |
|
1669
CALL
Teladoc Health
TDOC
$1.58B
| $3.61M | ﹤0.01% |
369,600
-220,000
| -37% | -$2.68M |
|
1670
Steel Dynamics
STLD
$35.6B
| $3.61M | ﹤0.01% |
+27,905
| New | +$3.73M |
|
1671
CALL
Darling Ingredients
DAR
$9.93B
| $3.61M | ﹤0.01% |
98,300
-29,100
| -23% | -$1.21M |
|
1672
CALL
Sprott Junior Uranium Miners ETF
URNJ
$306M
| $3.6M | ﹤0.01% |
75,400
-216,000
| -74% | -$5.78M |
|
1673
CALL
Deutsche Bank
DB
$66.3B
| $3.59M | ﹤0.01% |
225,400
-69,300
| -24% | -$1.13M |
|
|
EXAS
1674
PUT
DELISTED
Exact Sciences
EXAS
| $3.59M | ﹤0.01% |
85,000
-195,200
| -70% | -$10.7M |
|
1675
TransDigm Group
TDG
$69.2B
| $3.59M | ﹤0.01% |
2,810
-709
| -20% | -$909K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.